APA (7th ed.) Citation

Pettingill, O. S. (1965). Birds of the Black Hills. Laboratory of Ornithology at Cornell University.

Chicago Style (17th ed.) Citation

Pettingill, Olin Sewall. Birds of the Black Hills. Ithaca, N. Y.: Laboratory of Ornithology at Cornell University, 1965.

MLA (9th ed.) Citation

Pettingill, Olin Sewall. Birds of the Black Hills. Laboratory of Ornithology at Cornell University, 1965.